Hey lugnut.
I haven't seen a 5 pin flat do you mean the 4 pin? I have to look I only used the 7 pin. It sqauts a little bit I was pulling 5000lbs I have a v8 and it pulled great. If I were to pull that heavy consistanly with it I would use stablizer bars. with the 6 speed trans you just out it in drive and hit the gas. it was a little wavey on the curves. But as a whole if you have pulled a trailer before you will be fine

oh thank you i havent seen one of those i need to get out more. I was pulling 16 ft car hauler full of hay it was 5 to 6 k in pounds
and again was ok if i was to pull for a extended trip 2k miles or more i wouls look at stabilizer bars